Flow sensor



FIG. 1 is a top-front perspective view of a flow sensor of the presentinvention;

FIG. 2 is a bottom-rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

CLAIM The ornamental design for a flow sensor, as shown and described.